/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.kie.kogito.index;

import java.util.Iterator;
import java.util.function.Supplier;

public class DependencyInjectionUtils {

    private DependencyInjectionUtils() {
        // Utils class, no instantiable
    }

    public static <T> T getInstance(Iterable<T> iterable) {
        return getInstanceOrDefault(iterable, () -> null);
    }

    public static <T> T getInstanceOrDefault(Iterable<T> iterable, Supplier<T> defaultValue) {
        Iterator<T> iterator = iterable.iterator();
        if (iterator.hasNext()) {
            return iterator.next();
        } else {
            return defaultValue.get();
        }
    }
}
